EP 1654080 A1 20060510 - INTERNAL HIGH PRESSURE SHAPING METHOD FOR SHAPING CONICAL METAL TUBES
Title (en)
INTERNAL HIGH PRESSURE SHAPING METHOD FOR SHAPING CONICAL METAL TUBES
Title (de)
VERFAHREN ZUM INNENHOCHDRUCKUMFORMEN VON KONISCHEN ROHREN AUS METALL
Title (fr)
PROCEDE POUR LE FORMAGE A HAUTE PRESSION INTERNE DE TUBES CONIQUES EN METAL
Publication
Application
Priority
- EP 2004008727 W 20040804
- DE 10337383 A 20030813
Abstract (en)
[origin: WO2005018846A1] The invention relates to an internal high pressure shaping method for shaping metal tubes (5) produced from metal, especially steel, in a tool (1) that has a die cavity (2) with a complex contour. Said die cavity (2) has cylindrical sections (2a, 2b) on its two opposite ends. The tube which is conical across its entire length is inserted in such a die cavity in such a manner that it lies with its ends (5a, 5b) in the area of the cylindrical sections (2a, 2b). The sealing plugs force the ends (5a, 5b) against the cylindrical sections (2a, 2b), optionally while radially flaring them, so that they come to rest clamped between the wall of the cylindrical sections (2a, 2b) and the sealing plugs. The tube (5) is forced against the complex contour of the die cavity (2) by subjecting the tube (5) to an internal high pressure and simultaneous axial compression of the tube (5).
IPC 1-7
IPC 8 full level
B21D 26/043 (2011.01); B21D 26/047 (2011.01); B21D 51/10 (2006.01)
CPC (source: EP US)
B21D 26/043 (2013.01 - EP US); B21D 26/047 (2013.01 - EP US); B21D 51/10 (2013.01 - EP US); Y10T 29/49805 (2015.01 - EP US)
Citation (search report)
See references of WO 2005018846A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2005018846 A1 20050303; CA 2536076 A1 20050303; DE 10337383 A1 20050310; DE 10337383 B4 20051208; EP 1654080 A1 20060510; US 2007180677 A1 20070809; US 7797806 B2 20100921
DOCDB simple family (application)
EP 2004008727 W 20040804; CA 2536076 A 20040804; DE 10337383 A 20030813; EP 04741365 A 20040804; US 56826504 A 20040804